Nouns denoting natural phenomena

a transient air pressure greater than the surrounding atmospheric pressure
a point of convergence of light (or other radiation) or a point from which it diverges
mock sun
a bright spot on the parhelic circle; caused by diffraction by ice crystals
the phenomenon of different colors appearing when certain crystals are viewed from different directions
an unknown and unpredictable phenomenon that causes an event to result one way rather than another
the irregular motion of waves (usually caused by wind blowing in a direction opposite to the tide)
a powdery deposit on a surface
the shattering or crushing effect of a sudden release of energy as in an explosion
ionospheric wave
a sky wave that is reflected by the ionosphere
(economics) any indirect effect of public expenditure
an optical illusion of motion produced by viewing a rapid succession of still pictures of a moving object
heat wave
a wave of unusually hot weather
systemic circulation
circulation that supplies blood to all the body except to the lungs
thermionic current
an electric current produced between two electrodes as a result of electrons emitted by thermionic emission
the phenomenon of forming chemical bonds
a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning
the power output of a generator or power plant
angular velocity
(physics) the rate of change of the angular position of a rotating body; usually expressed in radians per second or radians per minute
a dense winter fog containing ice particles
mass deficiency
the amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particles
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